{"id":7055,"date":"2012-09-06T19:03:54","date_gmt":"2012-09-06T19:03:54","guid":{"rendered":"https:\/\/www.unirope.com\/?page_id=7055"},"modified":"2019-08-13T23:54:14","modified_gmt":"2019-08-13T23:54:14","slug":"center-of-gravity-cg","status":"publish","type":"page","link":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/","title":{"rendered":"Centre de gravit\u00e9 (CG)"},"content":{"rendered":"<table class=\"generic-table2\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td width=\"49%\">\n<p>L\u2019emplacement du centre de gravit\u00e9 (CG) de la charge \u00e0 soulever est tr\u00e8s important \u00e0 consid\u00e9rer. Si le CG n\u2019est pas exactement centr\u00e9, la tension de chaque \u00e9lingue en sera modifi\u00e9e et, si les branches des \u00e9lingues sont de m\u00eame longueur, la charge s\u2019inclinera au moment o\u00f9 elle sera soulev\u00e9e. Il y a donc plusieurs facteurs \u00e0 consid\u00e9rer, et trouver le CG exact n\u2019est pas toujours facile.<\/p>\n<\/td>\n<td width=\"2%\">\u00a0<\/td>\n<td width=\"49%\">\n<p>En cas de doute, demandez conseil (\u00e0 votre superviseur de la s\u00e9curit\u00e9 ou \u00e0 un ing\u00e9nieur).<br \/>\nUne charge d\u00e9centr\u00e9e peut surcharger fortement vos \u00e9lingues.<\/p>\n<p>Voici quelques exemples simples des facteurs de base \u00e0 consid\u00e9rer.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td><img loading=\"lazy\" src=\"\/wp-content\/uploads\/2015\/03\/Center-of-gravity-FR.jpg\" alt=\"\" width=\"175\" height=\"240\" \/><\/td>\n<td>\u00a0<\/td>\n<td><img loading=\"lazy\" src=\"\/wp-content\/uploads\/2015\/03\/Center-of-gravity-2-FR.jpg\" alt=\"\" width=\"160\" height=\"200\" \/><\/td>\n<\/tr>\n<tr>\n<td>Lorsqu\u2019elle est soulev\u00e9e \u00e0 la verticale, la charge sera partag\u00e9e de mani\u00e8re \u00e9gale si le centre de gravit\u00e9 est plac\u00e9 entre les points d\u2019accrochage. Si le poids de la charge est de 10 tonnes, chaque \u00e9lingue sera alors soumise \u00e0 une tension de 5 tonnes. Il faut donc employer une \u00e9lingue en c\u00e2ble \u00e0 \u00e2me m\u00e9tallique c\u00e2bl\u00e9e \u00e0 6 brins d\u2019un diam\u00e8tre de 3\/4 po.<\/td>\n<td>\u00a0<\/td>\n<td>\n<p>Dans cet exemple, la charge de 10 tonnes est centr\u00e9e de mani\u00e8re \u00e9gale entre les points d\u2019accrochage, mais elle est soulev\u00e9e \u00e0 un angle d\u2019\u00e9lingue de 65\u02da. Nous savons que chaque \u00e9lingue est soumise \u00e0 une tension de 5 tonnes \u00e0 la VERTICALE. \u00c0 l\u2019aide du calcul indiqu\u00e9 dans la section pr\u00e9c\u00e9dente (obliquit\u00e9), nous obtenons le r\u00e9sultat suivant : (<strong><a style=\"font-size: 1em; display:inline;\" title=\"Technical Information\" href=\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/sling-angles-and-angularity-factors\/\">obliquit\u00e9<\/a><\/strong>), nous obtenons le r\u00e9sultat suivant:<\/p>\n<p><span style=\"text-decoration: underline\">_\u2003\u2003\u2003\u200310 tonnes\u2003\u2003\u2003\u2003_<\/span>\u2003\u2003x\u2003\u2003FO\u20031,103 = 5,52 tonnes<br \/> <img loading=\"lazy\" src=\"\/wp-content\/themes\/unirope\/img\/spacer.gif\" alt=\"\" width=\"5\" height=\"10\" \/>2\u00a0branches d\u2019\u00e9lingue<\/p>\n<p>Ainsi, d\u2019apr\u00e8s le tableau de la page pr\u00e9c\u00e9dente, pour une capacit\u00e9 de levage de 5,52\u00a0tonnes, nous devons utiliser des \u00e9lingues en c\u00e2ble \u00e0 \u00e2me m\u00e9tallique \u00e0 6\u00a0brins de 7\/8\u00a0po de diam\u00e8tre.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\u00a0<\/td>\n<td>\u00a0<\/td>\n<td>\u00a0<\/td>\n<\/tr>\n<tr>\n<td><img loading=\"lazy\" src=\"\/wp-content\/uploads\/2015\/03\/Center-of-gravity-3-FR.jpg\" alt=\"\" width=\"175\" height=\"240\" \/><\/td>\n<td>\u00a0<\/td>\n<td><img loading=\"lazy\" src=\"\/wp-content\/uploads\/2015\/03\/Center-of-gravity-4-FR.jpg\" alt=\"\" width=\"176\" height=\"200\" \/><\/td>\n<\/tr>\n<tr>\n<td>\u00a0<\/td>\n<td>\u00a0<\/td>\n<td>\u00a0<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Lorsque le centre de gravit\u00e9 n\u2019est pas espac\u00e9 de mani\u00e8re \u00e9gale entre les points d\u2019accrochage, les \u00e9lingues et leurs raccords ne portent pas une partie \u00e9gale de la charge. L\u2019\u00e9lingue fix\u00e9e au point d\u2019accrochage le plus proche du CG portera la plus grande partie de la charge.<\/p>\n<p>\u00c9lingue 1 = <span style=\"text-decoration: underline\">10 tonnes x 2<\/span> = 2 tonnes<br \/> <img loading=\"lazy\" src=\"\/wp-content\/themes\/unirope\/img\/spacer.gif\" alt=\"\" width=\"60\" height=\"10\" \/>(8+2)<\/p>\n<p>\u00c9lingue 2 = <span style=\"text-decoration: underline\">10 tonnes x 8<\/span> = 8 tonnes<br \/> <img loading=\"lazy\" src=\"\/wp-content\/themes\/unirope\/img\/spacer.gif\" alt=\"\" width=\"60\" height=\"10\" \/>(8+2)<\/p>\n<\/td>\n<td>\u00a0<\/td>\n<td>\n<p>Le calcul ci-contre nous indique que l\u2019\u00e9lingue 1 supporte une tension de 2 tonnes et que l\u2019\u00e9lingue 2 supporte une tension de 8 tonnes. De plus, les deux \u00e9lingues sont utilis\u00e9es \u00e0 un angle, ce qui signifie que nous devons appliquer le facteur d\u2019obliquit\u00e9 pour CHAQUE \u00e9lingue:<\/p>\n<p>\u00c9lingue 1 = 2 tonnes x FO 1.220 (55\u00b0) = 2.44 tonnes<\/p>\n<p>\u00c9lingue 2 = 8 tonnes x FO 1.015 (80\u00b0) = 8.12 tonnes<\/p>\n<p>En consultant la capacit\u00e9 nominale de l\u2019\u00e9lingue pour la plus grande charge (8,12 tonnes), nous devons utiliser des \u00e9lingues en c\u00e2ble \u00e0 \u00e2me m\u00e9tallique \u00e0 6 brins d\u2019un diam\u00e8tre de 1 po (et de longueurs in\u00e9gales pour garder la charge \u00e0 l\u2019horizontale).<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019emplacement du centre de gravit\u00e9 (CG) de la charge \u00e0 soulever est tr\u00e8s important \u00e0 consid\u00e9rer. Si le CG n\u2019est pas exactement centr\u00e9, la tension de chaque \u00e9lingue en sera modifi\u00e9e et, si les branches des \u00e9lingues sont de m\u00eame longueur, la charge s\u2019inclinera au moment o\u00f9 elle sera soulev\u00e9e. Il y a donc plusieurs [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":7049,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Centre de gravit\u00e9 (CG) - Unirope Ltd.\" \/>\n<meta property=\"og:description\" content=\"L\u2019emplacement du centre de gravit\u00e9 (CG) de la charge \u00e0 soulever est tr\u00e8s important \u00e0 consid\u00e9rer. Si le CG n\u2019est pas exactement centr\u00e9, la tension de chaque \u00e9lingue en sera modifi\u00e9e et, si les branches des \u00e9lingues sont de m\u00eame longueur, la charge s\u2019inclinera au moment o\u00f9 elle sera soulev\u00e9e. Il y a donc plusieurs [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/\" \/>\n<meta property=\"og:site_name\" content=\"Unirope Ltd.\" \/>\n<meta property=\"article:modified_time\" content=\"2019-08-13T23:54:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.unirope.com\/wp-content\/uploads\/2015\/03\/Center-of-gravity-FR.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.unirope.com\/#organization\",\"name\":\"Unirope Ltd\",\"url\":\"https:\/\/www.unirope.com\/\",\"sameAs\":[\"https:\/\/www.youtube.com\/channel\/UCYDjk5HBhJLEnptrBbQvjgg\"],\"logo\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.unirope.com\/#logo\",\"inLanguage\":\"fr-FR\",\"url\":\"https:\/\/www.unirope.com\/wp-content\/uploads\/2012\/06\/unirope_logo.gif\",\"contentUrl\":\"https:\/\/www.unirope.com\/wp-content\/uploads\/2012\/06\/unirope_logo.gif\",\"width\":220,\"height\":50,\"caption\":\"Unirope Ltd\"},\"image\":{\"@id\":\"https:\/\/www.unirope.com\/#logo\"}},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.unirope.com\/#website\",\"url\":\"https:\/\/www.unirope.com\/\",\"name\":\"Unirope Ltd.\",\"description\":\"Wire Rope &amp; Rigging Products\",\"publisher\":{\"@id\":\"https:\/\/www.unirope.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.unirope.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#primaryimage\",\"inLanguage\":\"fr-FR\",\"url\":\"\/wp-content\/uploads\/2015\/03\/Center-of-gravity-FR.jpg\",\"contentUrl\":\"\/wp-content\/uploads\/2015\/03\/Center-of-gravity-FR.jpg\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#webpage\",\"url\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/\",\"name\":\"Centre de gravit\u00e9 (CG) - Unirope Ltd.\",\"isPartOf\":{\"@id\":\"https:\/\/www.unirope.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#primaryimage\"},\"datePublished\":\"2012-09-06T19:03:54+00:00\",\"dateModified\":\"2019-08-13T23:54:14+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.unirope.com\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Produits\",\"item\":\"https:\/\/www.unirope.com\/fr\/produits\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"\u00c9lingues\",\"item\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"\u00c9lingues en c\u00e2ble m\u00e9tallique\",\"item\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"Le gr\u00e9ement les directives\",\"item\":\"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/\"},{\"@type\":\"ListItem\",\"position\":6,\"name\":\"Centre de gravit\u00e9 (CG)\"}]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/","og_locale":"fr_FR","og_type":"article","og_title":"Centre de gravit\u00e9 (CG) - Unirope Ltd.","og_description":"L\u2019emplacement du centre de gravit\u00e9 (CG) de la charge \u00e0 soulever est tr\u00e8s important \u00e0 consid\u00e9rer. Si le CG n\u2019est pas exactement centr\u00e9, la tension de chaque \u00e9lingue en sera modifi\u00e9e et, si les branches des \u00e9lingues sont de m\u00eame longueur, la charge s\u2019inclinera au moment o\u00f9 elle sera soulev\u00e9e. Il y a donc plusieurs [&hellip;]","og_url":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/","og_site_name":"Unirope Ltd.","article_modified_time":"2019-08-13T23:54:14+00:00","og_image":[{"url":"https:\/\/www.unirope.com\/wp-content\/uploads\/2015\/03\/Center-of-gravity-FR.jpg"}],"twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Organization","@id":"https:\/\/www.unirope.com\/#organization","name":"Unirope Ltd","url":"https:\/\/www.unirope.com\/","sameAs":["https:\/\/www.youtube.com\/channel\/UCYDjk5HBhJLEnptrBbQvjgg"],"logo":{"@type":"ImageObject","@id":"https:\/\/www.unirope.com\/#logo","inLanguage":"fr-FR","url":"https:\/\/www.unirope.com\/wp-content\/uploads\/2012\/06\/unirope_logo.gif","contentUrl":"https:\/\/www.unirope.com\/wp-content\/uploads\/2012\/06\/unirope_logo.gif","width":220,"height":50,"caption":"Unirope Ltd"},"image":{"@id":"https:\/\/www.unirope.com\/#logo"}},{"@type":"WebSite","@id":"https:\/\/www.unirope.com\/#website","url":"https:\/\/www.unirope.com\/","name":"Unirope Ltd.","description":"Wire Rope &amp; Rigging Products","publisher":{"@id":"https:\/\/www.unirope.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.unirope.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"fr-FR"},{"@type":"ImageObject","@id":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#primaryimage","inLanguage":"fr-FR","url":"\/wp-content\/uploads\/2015\/03\/Center-of-gravity-FR.jpg","contentUrl":"\/wp-content\/uploads\/2015\/03\/Center-of-gravity-FR.jpg"},{"@type":"WebPage","@id":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#webpage","url":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/","name":"Centre de gravit\u00e9 (CG) - Unirope Ltd.","isPartOf":{"@id":"https:\/\/www.unirope.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#primaryimage"},"datePublished":"2012-09-06T19:03:54+00:00","dateModified":"2019-08-13T23:54:14+00:00","breadcrumb":{"@id":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/center-of-gravity-cg\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.unirope.com\/fr\/"},{"@type":"ListItem","position":2,"name":"Produits","item":"https:\/\/www.unirope.com\/fr\/produits\/"},{"@type":"ListItem","position":3,"name":"\u00c9lingues","item":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/"},{"@type":"ListItem","position":4,"name":"\u00c9lingues en c\u00e2ble m\u00e9tallique","item":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/"},{"@type":"ListItem","position":5,"name":"Le gr\u00e9ement les directives","item":"https:\/\/www.unirope.com\/fr\/produits\/elingues\/elingues-en-cable-metallique\/rigging-guidelines\/"},{"@type":"ListItem","position":6,"name":"Centre de gravit\u00e9 (CG)"}]}]}},"_links":{"self":[{"href":"https:\/\/www.unirope.com\/fr\/wp-json\/wp\/v2\/pages\/7055"}],"collection":[{"href":"https:\/\/www.unirope.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.unirope.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.unirope.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.unirope.com\/fr\/wp-json\/wp\/v2\/comments?post=7055"}],"version-history":[{"count":0,"href":"https:\/\/www.unirope.com\/fr\/wp-json\/wp\/v2\/pages\/7055\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.unirope.com\/fr\/wp-json\/wp\/v2\/pages\/7049"}],"wp:attachment":[{"href":"https:\/\/www.unirope.com\/fr\/wp-json\/wp\/v2\/media?parent=7055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}